ARPANETAdvanced Research Projects Agency Network
Internet backboneThe main pathway of high-speed communications lines over which all Internet traffic flows.
Network Service ProvidersBackbone links and routers
Network Access PointsNSP equipment and links
nternet service providerIs a company that offers Internet access to individuals, businesses, and smaller ISPs
TCP/IPIs the primary protocol suite responsible for message transmission on the Internet
Static IP AddressPermanent IP Address
Dynamic IP AddressTemporary IP Adress
Domain NameIs a key component of Web page addresses and e-mail addresses
LatencyThe Elapsed time for data to make a round trip from point A to point B back to Point A
Asymmetric Internet connectionWhen upstream speeds differ from downstream speeds
Symmetric Internet connectionWhen upstream and downstream speeds are the same
dial-up connectionA fixed Internet connection that uses a voiceband modem and telephone lines
voiceband modemconverts the signals from your computer into audible analog signals that can travel over telephone lines
DSLis a high-speed, digital, always-on Internet access technology that runs over standard phone lines
Cable Internet serviceIs a means of distributing always-on broadband Internet access.
Cable modemsconvert your computer’s signal into one that can travel over the CATV network
Satellite Internet servicedistributes always-on, high- speed asymmetric Internet
Satellite modemis a device that modulates data signals from a computer into a frequency band
Fixed wireless Internet servicebroadcasts data signals in order to offer Internet access to large areas
Portable Internet accessis the ability to easily move your Internet service from one location to another
Mobile Internet accessoffers a continuous Internet connection as you are walking or riding in a bus, car, train, or plane
Wi-Fi hotspotis an area in which the public can access a Wi-Fi network that offers Internet service
mobile broadbandcellular service providers offer data services
MiFiis a brand name for a compact, mobile, wireless router offered by Novatel Wireless
Cloud computingDepends on a grid of servers, storage devices, and protocols that offer Internet-accessible computing services
Real- time messaging systemAllows people to exchange short messages while they are online
VoIPis a technology in which a broadband Internet connection is used to place telephone calls instead of the regular phone system
Internet forumWeb-based online discussion site where participants post comments to discussion threads
wikiallows participants to modify posted material
blogis similar to an online diary; it is maintained by a person, company or organization and contains a series of entries on one or more topics.
tweetis a short message of 140 characters or less, posted to the Twitter Web site
grid computing systems a network of computers harnessed together to perform processing tasks
P2P file sharingallows users to obtain files from other users located anywhere on the Internet
BitTorrentis a file sharing protocol that distributes the role of file server across a collection of dispersed computers
intrusionis any access to data or programs by hackers, criminals, or other unauthorized persons
communications portis the doorway that allows a computer to exchange data with other devices
port probeuses automated software to locate computers that have open ports
A firewallis software or hardware designed to filter out suspicious packets attempting to enter or leave a computer
Routersare intended to work within LANs to monitor and direct packets being transported from one device to another
routable IP addressis one that can be accessed by packets on the Internet
A private IP addressis a non-routable IP address that can be used within a LAN, but not for Internet data transport
Network address translationis the process your router uses to keep track of packets
virtual private networkaccess to a remote access server in the corporate office
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